916211138 has 32 divisors (see below), whose sum is σ = 1456220160. Its totient is φ = 431686080.

The previous prime is 916211137. The next prime is 916211143. The reversal of 916211138 is 831112619.

It is not an unprimeable number, because it can be changed into a prime (916211137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 666620 + ... + 667992.

It is an arithmetic number, because the mean of its divisors is an integer number (45506880).

Almost surely, 2^916211138 is an apocalyptic number.

916211138 is a deficient number, since it is larger than the sum of its proper divisors (540009022).

916211138 is a wasteful number, since it uses less digits than its factorization.

916211138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1682.

The product of its digits is 2592, while the sum is 32.

The square root of 916211138 is about 30268.9797978062. The cubic root of 916211138 is about 971.2518424733.

The spelling of 916211138 in words is "nine hundred sixteen million, two hundred eleven thousand, one hundred thirty-eight".